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Fix for test/CodeGen/PowerPC/2008-10-17-AsmMatchingOperands.ll crash. 

llvm-svn: 114767
This commit is contained in:
John Thompson 2010-09-24 22:24:05 +00:00
parent 1d35ad62cc
commit 8118ef8d3d
1 changed files with 20 additions and 0 deletions
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20
llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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@ -5434,6 +5434,26 @@ void SelectionDAGBuilder::visitInlineAsm(ImmutableCallSite CS) {
for (unsigned i = 0, e = ConstraintOperands.size(); i != e; ++i) {
SDISelAsmOperandInfo &OpInfo = ConstraintOperands[i];
// If this is an output operand with a matching input operand, look up the
// matching input. If their types mismatch, e.g. one is an integer, the
// other is floating point, or their sizes are different, flag it as an
// error.
if (OpInfo.hasMatchingInput()) {
SDISelAsmOperandInfo &Input = ConstraintOperands[OpInfo.MatchingInput];
if (OpInfo.ConstraintVT != Input.ConstraintVT) {
if ((OpInfo.ConstraintVT.isInteger() !=
Input.ConstraintVT.isInteger()) ||
(OpInfo.ConstraintVT.getSizeInBits() !=
Input.ConstraintVT.getSizeInBits())) {
report_fatal_error("Unsupported asm: input constraint"
" with a matching output constraint of"
" incompatible type!");
}
Input.ConstraintVT = OpInfo.ConstraintVT;
}
}
// Compute the constraint code and ConstraintType to use.
TLI.ComputeConstraintToUse(OpInfo, OpInfo.CallOperand, &DAG);